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Direction finding study of Jovian hectometric and broadband kilometric radio emissions: evidence for their auroral origin
Zarka, P.; Ladreiter, H. P.; Lacacheux, A.
Taking advantage of the direction finding capabilities of the Ulysses unified radio and plasma wave (URAP) experiment we derive the source locations and emission characteristics of the Jovian hectometric (HOM) and broadband kilometric (bKOM) emissions. Unlike previous studies we additionally determine the systematic error of the source direction d…
Collimation of cometary dust jets and filaments
Keller, H. U.; Knollenberg, J.; Markiewicz, W. J.
It has been suggested that cometary dust jets, as for example imaged by the Halley Multicolour Camera (HMC), possibly originate from vents, or crater-like surface features. Dust flow emitted from such indentations is collimated if compared to emission from a flat surface. Dust liberated from the bottom of a cometary "crater" emerges at the surface…
The morphology of the north Jovian ultraviolet aurora observed with the Hubble Space Telescope
Paresce, Francesco; Prange, Renee; Gerard, Jean-Claude +1 more
A series of six images covering a complete rotation of the north polar region of Jupiter were obtained in February 1993 with the Faint Object Camera on board the Hubble Space Telescope. These images provide the first global picture of the morphology of the Jovian ultraviolet aurora observed from Earth orbit. The camera passband was centered near 1…